PseudoNewsController.php

<?php

// ... tx_news class

class PseudoNewsController extends NewsBaseController {

  /**
   *
   */
  public function listAction(Demand $demand /* ... */) {
    // ... do something
    
    $this->dispatch(/*...*/);
  }
}

PseudoNewsSlot.php

<?php

// Slot class als POPO

class PseudoNewsSlot {
  
  /**
   *
   */
  public function listAction($parameters) { // <-- this will always work fine
    // ... 
  }
}

PseudoNewsSlotExtending.php

<?php

// Slot class extending the news class

use PseudoNewsController;

class PseudoNewsSlotExtending extends PseudoNewsController {
  
  /**
   *
   */
  public function listAction($parameters) { // <-- this leads to issues when working in strict more
    // ... do something
  }
}